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80397200 = 24521315461
BaseRepresentation
bin1001100101011…
…00001110010000
312121021121020002
410302230032100
5131040202300
611551105132
71664236112
oct462541620
9177247202
1080397200
1141422674
1222b121a8
131386c110
14a96b3b2
1570d15d5
hex4cac390

80397200 has 60 divisors (see below), whose sum is σ = 208025748. Its totient is φ = 29683200.

The previous prime is 80397169. The next prime is 80397209. The reversal of 80397200 is 279308.

It can be written as a sum of positive squares in 6 ways, for example, as 18113536 + 62283664 = 4256^2 + 7892^2 .

It is not an unprimeable number, because it can be changed into a prime (80397209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2531 + ... + 12930.

Almost surely, 280397200 is an apocalyptic number.

80397200 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80397200 is an abundant number, since it is smaller than the sum of its proper divisors (127628548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80397200 is a wasteful number, since it uses less digits than its factorization.

80397200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15492 (or 15481 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 80397200 is about 8966.4485723167. The cubic root of 80397200 is about 431.5988789234.

The spelling of 80397200 in words is "eighty million, three hundred ninety-seven thousand, two hundred".

Divisors: 1 2 4 5 8 10 13 16 20 25 26 40 50 52 65 80 100 104 130 200 208 260 325 400 520 650 1040 1300 2600 5200 15461 30922 61844 77305 123688 154610 200993 247376 309220 386525 401986 618440 773050 803972 1004965 1236880 1546100 1607944 2009930 3092200 3215888 4019860 5024825 6184400 8039720 10049650 16079440 20099300 40198600 80397200